Fitness Tools & Calculators
Free, practical tools for sailors and seafarers — check your BMI and body fat, dial in your calories and hydration, find your one-rep max, and plan your onboard workouts.
⚖️ BMI Calculator
Work out your Body Mass Index from weight and height in metric or imperial units, and see which weight category it falls into
📊 Body Fat Calculator
Estimate your body fat percentage from a few tape-measure readings and see how it compares to healthy ranges for your age and sex
🔥 Calorie Calculator
Find your daily calorie needs from your stats and activity level, plus targets for cutting, maintaining, or bulking
🏋️ One-Rep Max Calculator
Estimate your one-rep max from any weight and rep count, with a full percentage table for programming your lifts
💧 Water Intake Calculator
Calculate how much water to drink each day based on your weight, activity, and climate — key for staying sharp on deck
🗓️ Workout Planner
Generate a weekly workout split tailored to your goal, experience level, and days available to train